Table 1. Comparison of DLS, ZP and pH of the Ag@SiO2 and A@SiO2–SO3H.
| Sample | DLS (nm) | ZP (mv) | pH |
|---|---|---|---|
| Ag@SiO2 | 22.6 | 42.5 | 3.7 |
| Ag@SiO2–SO3H | 77.5 | −23.3 | 2.3 |
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